Rhizobium bacteria form nodules on legume roots and fix atmospheric nitrogen, benefiting the plant.

Rhizobium bacteria form symbiotic relationships with legume roots, fixing nitrogen and improving soil fertility.

Ribosomal RNA (rRNA) plays a crucial role in catalyzing protein synthesis at the ribosome.

Ribosomes are the cellular machinery that synthesizes proteins during the process of translation.

Ribosomes are the cellular machinery that translates mRNA into polypeptides, facilitating protein synthesis.

RNA acts as a messenger (mRNA) and translator (tRNA) in the process of protein synthesis.

RNA polymerase synthesizes RNA from a DNA template during the process of transcription in gene expression.

RuBisCO is the enzyme that catalyzes the fixation of carbon dioxide in the Calvin cycle.

RuBisCO is the enzyme that catalyzes the fixation of carbon dioxide in the Calvin cycle.

Stomata are small openings on the leaf surface that allow for gas exchange, including the intake of carbon dioxide and release of oxygen.

Stomata are small openings that allow for gas exchange, including the intake of carbon dioxide.

Surfactant reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.

Surfactants enhance the penetration of disinfectants by reducing surface tension, allowing better contact with microbes.

T helper cells are crucial for activating B cells and cytotoxic T cells, coordinating the adaptive immune response.

The 5' cap protects mRNA from degradation and assists in the initiation of translation by helping ribosomes recognize the mRNA.

Amniotic fluid cushions the fetus, providing protection and allowing for movement.

The aorta is the main artery that distributes oxygenated blood from the heart to the rest of the body.

The apical meristem is responsible for cell division, leading to primary growth in plants.

The apical meristem is responsible for cell division and growth at the tips of roots and shoots.

Cambium is a type of meristematic tissue that contributes to secondary growth, increasing the thickness of stems and roots.

Coronary arteries supply blood to the heart muscle itself, ensuring it receives the oxygen and nutrients needed to function.

The endoplasmic reticulum is involved in the transport of materials within the cell and the synthesis of proteins and lipids.

The liver produces bile, which is essential for the emulsification and digestion of fats.

The microbiome plays a crucial role in digestion, nutrient absorption, and modulating the immune system.

The ovule develops into a seed after fertilization, containing the embryo and food supply.

The pancreas secretes digestive enzymes that help break down carbohydrates, proteins, and fats in the small intestine.

The placenta provides oxygen and nutrients to the developing fetus and removes waste products.

The promoter is a DNA sequence that initiates transcription by providing a binding site for RNA polymerase.

The seed coat serves to protect the embryo from physical damage and desiccation during dormancy.

The sinoatrial (SA) node acts as the natural pacemaker of the heart, initiating electrical impulses that trigger heartbeats.